package org.szt.humwiki;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharacterEncodingFilter implements Filter {
	protected FilterConfig filterConfig = null;
	protected String encoding = "";

	@Override
	public void destroy() {
		filterConfig = null;
		encoding = null;
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) arg0;
		HttpServletResponse resp = (HttpServletResponse) arg1;
		req.setCharacterEncoding(encoding);
		resp.setCharacterEncoding(encoding);
		arg2.doFilter(arg0, arg1);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		this.filterConfig = arg0;
		this.encoding = filterConfig.getInitParameter("encoding");
	}

}
